Metamorphic channels in periodic mesoporous methylenesilica

Tewodros Asefa, Mark J. MacLachlan, Hiltrud Grondey, Neil Coombs, Geoffrey A. Ozin

Research output: Contribution to journalArticlepeer-review

235 Scopus citations


Bridging methylene groups are transformed into terminal methyl groups when periodic mesoporous methylenesilicas, prepared for the first time by surfactant-templated synthesis, are subjected to controlled thermal treatment at 350-600 °C. The methylene groups integrated 'inside the channel walls' transform smoothly to methyl groups suspended 'within the channel spaces' (shown schematically).

Original languageEnglish (US)
Pages (from-to)1808-1811
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number10
StatePublished - May 15 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)


  • Materials science
  • Mesoporosity
  • Organic-inorganic hybrid composites
  • Silicon
  • Solid-state chemistry


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